package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.Utils.ValidateCodeUtils;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Orders;
import com.itheima.reggie.entity.User;
import com.itheima.reggie.service.OrderService;
import com.itheima.reggie.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 移动端页面
 */
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private OrderService orderService;
    @Autowired
    private HttpServletRequest request;
    @Autowired
    private RedisTemplate redisTemplate;


    /**
     * 发送手机短信验证码
     *
     * @param user
     * @param session
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session) {
        //获取手机号
        String phone = user.getPhone();
        if (!phone.isEmpty()) {
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("验证码,code={}", code);

            //调用阿里云提供的短信服务API完成发送短信
            //SMSUtils.sendMessage("瑞吉外卖","",phone,code);

            //需要将生成的验证码保存到Session
            //session.setAttribute("code", code);

            //需要将生成的验证码保存到Redis,设置过期时间
            //phone 根据用户手机号动态生成key,  code 动态设置value值 也就是把生成的验证码设置成value值
            redisTemplate.opsForValue().set(phone, code, 5, TimeUnit.MINUTES);

            return R.success("手机验证码短信发送成功");
        }
        return R.error("短信发送失败");
    }

    /**
     * 移动端用户登录
     *
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {
        //获取登录的手机号
        String phone = map.get("phone").toString();
        //获取用户输入的验证码
        String code = map.get("code").toString();

        //从Session中获取保存的验证码
        //Object codeSession = session.getAttribute("code");
        //从Redis中获取缓存的验证码 根据用户的手机号获取值
        Object codeSession = redisTemplate.opsForValue().get(phone);

        //进行验证码的比对（页面提交的验证码和Session中保存的验证码比对）
        if (codeSession != null && codeSession.equals(code)) {
            //如果能够比对成功，说明登录成功
            //从表里面查询 看是否是新用户
            LambdaQueryWrapper<User> lqw = new LambdaQueryWrapper<>();
            lqw.eq(User::getPhone, phone);
            User user = userService.getOne(lqw);
            //判断当前手机号对应的用户是否为新用户，如果是新用户就自动完成注册
            if (user == null) {
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user", user.getId());

            //登录成功 把之前存储的验证码删除
            //session.removeAttribute("code");
            //从Redis中删除缓存的验证码
            redisTemplate.delete(phone);

            return R.success(user);
        }
        //否则登录失败
        return R.error("登录失败");
    }

    /**
     * 退出登录
     *
     * @return
     */
    @PostMapping("/loginout")
    public R<String> loginout() {
        request.getSession().invalidate();
        return R.success("退出成功");
    }


}